Crash on iPhone 6 on iOS 12 with Realtime Database

sourcetreehugger commented 7 months ago

[REQUIRED] Please fill in the following fields:

Unity editor version: 2021.3.32f1
Firebase Unity SDK version: 11.6.0
Source you installed the SDK: Unity package manager via tgz
Problematic Firebase Component: Realtime database
Other Firebase Components in use: None
Additional SDKs you are using: None
Platform you are using the Unity editor on: MacOS 14.0 with xCode version 15.0.1
Platform you are targeting: iPhone 6 iOS 12.5.7
Scripting Runtime: IL2CPP

[REQUIRED] Please describe the issue here:

When trying to register for a value changed in the realtime database, the app crashes on the iPhone 6. This only occurs on the iPhone 6 and not on later iPhones. When the app crashes, xcode outputs a cryptic message:

0x100aa4000: .long 0xfeedfacf ; unknown opcode

Steps to reproduce:

Install firebase through the package manager
Add GoogleService-Info to the project
Add the script below (see following section)
Build the project through xCode
Notice the crash on iPhone 6.
Notice that the crash does not occur on more 'modern' iPhones, which my collegues have

I was also able to reproduce this issue in the samples project.

I also tried downgrading the firebase SDK to 10.6.0 and the issue also occured here.

Relevant Code:

public void ReadSomeValueChange()
    {
        string dataBaseUrl = "https://<yourfirebaseurl>.firebasedatabase.app/";
        Debug.Log("Before getting instance");
        var dataBase = FirebaseDatabase.GetInstance(dataBaseUrl);
        Debug.Log("Before getting reference");
        var somePath = dataBase.GetReference("/test");
        Debug.Log("Before registering to value changed");
        somePath.ValueChanged += HandleValueChanged; // APP CRASHES HERE
    }

    private void HandleValueChanged(object sender, ValueChangedEventArgs args)
    {
        // app does not reach this line
        Debug.Log("Value changed");
    }

google-oss-bot commented 7 months ago

This issue does not seem to follow the issue template. Make sure you provide all the required information.

Ceikry commented 7 months ago

We're also experiencing similar problems with iOS 12.5.5 and iOS 12.5.7, using Firebase 11.5.

We saw two separate crashes, one from realtime database:

0 UnityFramework
threadpool-ms-io.cpp - Line 656
selector_thread(void*) (.cold.1) + 656
1 UnityFramework
firebase::FutureBackingData::~FutureBackingData() + 112
2 UnityFramework
firebase::FutureBackingData::~FutureBackingData() + 28
3 UnityFramework
firebase::ReferenceCountedFutureImpl::ReleaseFuture(firebase::FutureHandle const&) + 280
4 UnityFramework
firebase::FutureBase::Release() + 88
5 UnityFramework
firebase::ReferenceCountedFutureImpl::~ReferenceCountedFutureImpl() + 112
6 UnityFramework
firebase::ReferenceCountedFutureImpl::~ReferenceCountedFutureImpl() + 28
7 UnityFramework
firebase::ReferenceCountedFutureImpl::~ReferenceCountedFutureImpl() + 28
8 UnityFramework
firebase::FutureManager::CleanupOrphanedFutureApis(bool) + 532
9 UnityFramework
firebase::FutureManager::ReleaseFutureApi(void*) + 204
10 UnityFramework
firebase::database::internal::QueryInternal::~QueryInternal() + 72
11 UnityFramework
firebase::database::internal::DatabaseReferenceInternal::~DatabaseReferenceInternal() + 164
12 UnityFramework
firebase::database::internal::DatabaseReferenceInternal::~DatabaseReferenceInternal() + 28
13 UnityFramework
firebase::database::internal::DatabaseReferenceInternal::~DatabaseReferenceInternal() + 28
14 UnityFramework
firebase::database::Query::~Query() + 108
15 UnityFramework
firebase::database::DatabaseReference::~DatabaseReference() + 60
16 UnityFramework
firebase::database::DatabaseReference::~DatabaseReference() + 28
17 UnityFramework
firebase::database::DatabaseReference::~DatabaseReference() + 28
18 UnityFramework
Firebase_Database_CSharp_delete_InternalDatabaseReference + 96

As well as a couple that start in different places:

0 UnityFramework
threadpool-ms-io.cpp - Line 656
selector_thread(void*) (.cold.1) + 656
1 UnityFramework
firebase::FutureBackingData::~FutureBackingData() + 112
2 UnityFramework
firebase::FutureBackingData::~FutureBackingData() + 28
3 UnityFramework
firebase::ReferenceCountedFutureImpl::ReleaseFuture(firebase::FutureHandle const&) + 280
4 UnityFramework
firebase::FutureBase::Release() + 88
5 UnityFramework
firebase::FutureBase::operator=(firebase::FutureBase&&) + 32
6 UnityFramework
firebase::ReferenceCountedFutureImpl::AllocInternal(int, void*, void (*)(void*)) + 320
7 UnityFramework
firebase::FutureHandle firebase::ReferenceCountedFutureImpl::AllocInternal<bool>(int) + 80
8 UnityFramework
firebase::SafeFutureHandle<bool> firebase::ReferenceCountedFutureImpl::SafeAlloc<bool>(int) + 48
9 UnityFramework
firebase::remote_config::internal::RemoteConfigInternal::Activate() + 48
10 UnityFramework
firebase::remote_config::RemoteConfig::Activate() + 36
11 UnityFramework
Firebase_RemoteConfig_CSharp_FirebaseRemoteConfigInternal_Activate + 136

0 UnityFramework
threadpool-ms-io.cpp - Line 656
selector_thread(void*) (.cold.1) + 656
1 UnityFramework
firebase::callback::CallbackString::Run() + 964
2 UnityFramework
firebase::callback::CallbackEntry::Execute() + 144
3 UnityFramework
firebase::callback::CallbackDispatcher::DispatchCallbacks() + 116
4 UnityFramework
firebase::callback::PollCallbacks() + 68
5 UnityFramework
Firebase_App_CSharp_PollCallbacks + 12

firebase / quickstart-unity